I was just wondering why there can’t be a controller doing ground and another doing tower on Expert? At very busy airports, I feel so bad for just one controller having to deal with so many calls at a time. Especially calls from pilots not understanding the process and procedures.
A lot of the time, when it’s really busy, there will be different controllers controlling Ground and Tower. It’s ultimately the controller’s discretion over whether to split or not.
When a frequency get’s particularly busy, controllers can choose to split the airport with another controller. In the end, it’s up to the controller to decide
it generally always happens at large airports with a lot of arrivals, generally you see approach split as well. The other day there were 3 approach controllers and a center, and ground and tower split. Quite common